Overview
The LP2985-25DBVR is a fixed-output, low-noise, low-dropout voltage regulator manufactured by Texas Instruments. This regulator supports an input voltage range from 2.5 V to 16 V and can deliver up to 150 mA of load current. It is designed to provide stable and accurate voltage regulation, making it suitable for a variety of applications, including low-voltage microcontrollers (MCUs) and processors. The LP2985-25DBVR is available in a compact 5-pin SOT-23 (DBV) package, enhancing its usability in space-constrained designs.
Key Specifications
| Parameter | Description |
|---|---|
| Input Voltage Range | 2.5 V to 16 V |
| Output Voltage | Fixed: 2.5 V |
| Output Current | Up to 150 mA |
| Output Accuracy | ±1% for new chip, ±1.5% for standard-grade legacy chip |
| Quiescent Current | 71 µA at ILOAD = 0 mA, 750 µA at ILOAD = 150 mA |
| Shutdown Current | 1.12 µA (typ) for new chip |
| Noise | 30 µV RMS with 10-nF bypass capacitor |
| PSRR | 70 dB at 1 kHz, 40 dB at 1 MHz |
| Operating Junction Temperature | –40°C to +125°C |
| Package | 5-pin SOT-23 (DBV) |
Key Features
- Wide input voltage range: 2.5 V to 16 V
- Fixed output voltage: 2.5 V with ±1% accuracy for new chip
- Low dropout voltage: Typical dropout of 280 mV at 150-mA load current
- Low quiescent current: 71 µA at ILOAD = 0 mA and 750 µA at ILOAD = 150 mA
- Low noise: 30 µV RMS with 10-nF bypass capacitor
- High PSRR: 70 dB at 1 kHz and 40 dB at 1 MHz
- Output current limiting and thermal protection
- Shutdown feature with low shutdown current
- Stable with 2.2-µF ceramic capacitors
Applications
The LP2985-25DBVR is suitable for various applications, including:
- Low-voltage microcontrollers (MCUs) and processors
- Portable and non-portable electronic devices
- Power supply systems requiring low noise and high PSRR
- Space-constrained designs due to its compact SOT-23 package
Q & A
- What is the input voltage range of the LP2985-25DBVR?
The input voltage range is from 2.5 V to 16 V. - What is the fixed output voltage of the LP2985-25DBVR?
The fixed output voltage is 2.5 V. - What is the maximum output current of the LP2985-25DBVR?
The maximum output current is up to 150 mA. - What is the output accuracy of the LP2985-25DBVR?
The output accuracy is ±1% for the new chip and ±1.5% for the standard-grade legacy chip. - What is the quiescent current of the LP2985-25DBVR?
The quiescent current is 71 µA at ILOAD = 0 mA and 750 µA at ILOAD = 150 mA. - Does the LP2985-25DBVR have a shutdown feature?
Yes, it has a shutdown feature with a low shutdown current of 1.12 µA (typ) for the new chip. - What is the noise level of the LP2985-25DBVR?
The noise level is 30 µV RMS with a 10-nF bypass capacitor. - What is the PSRR of the LP2985-25DBVR?
The PSRR is 70 dB at 1 kHz and 40 dB at 1 MHz. - What is the operating junction temperature range of the LP2985-25DBVR?
The operating junction temperature range is –40°C to +125°C. - In what package is the LP2985-25DBVR available?
The LP2985-25DBVR is available in a 5-pin SOT-23 (DBV) package.
